<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <img src="32.jpg" alt="前后端的区别，请尝试刷新页面"
    <!-- title="这张图描述了前后端区别"> -->
    <img style="display:block" src="2.jpg" title="这张图描述了前后端区别">
    <img  src="2.jpg" width="200px" height="200px">
    <img src="2.jpg" width="200px">
    <img src="2.jpg" height="200px">
   <!-- 设置宽高更多是由css来设置 -->
</body>
</html>